This adds support for the JSON-RPC 2.0 request/response communication style for IPC, specifically over Unix Domain Sockets(UDS). The UDS supports full-duplex communication, so to leverage this, the R/W operations occur concurrently (each in its own OS thread).
This is alpha-level quality. I wanted this ASAP, so it is not up to the standards. Not well tested. If we realize this is useful, might nuke this specific repo and do it from scratch properly :)
Uses alloy.rs for JSON-RPC 2.0 implementation (alloy-json-rpc).